Milling-machine.



PATENTED'APR, 28, 1903.

S; R. BOYER.

MILLING MACHINE.

APPLIOATIONIIILBD MAY 28. 1992.

3 SHEETS-SHEET 2;

N0 MODEL.

Wifnzooao w n t m G THE Nmmls 'No. 726,248. PATENTED APR, 28. 1903.

S. R. BUYER.

MILLING MACHINE.

APPi-IGATION FILED MAY 28. 1902.

no MODEL. 1 y a sums-sum s.

alweml'oz v Gftoznegq UNIT D STATES":

{PATENT OFFICE.

SAMUEL R. BOYER, OF CLEVELAND, OHIO.

'MlLLlNG MACHINE.

SPECIFICATION forming part of Letters Patent No. 726,248, dated April 28, 1903.

Application filed May 2 8 y 1 9 02.

T aZZ whom itwuty concern.-

Be it known that I, SAMUEL R: BoYEn, a citizen of the United States,residing at Cleveland, in the county of Ouyahoga and State of Ohio, have invented certain new and use-' ful Improvements in- Milling 'Machines, of whichith'e following isa specification.

My invention relates to cnttin g attachments for milling-machines, and has for one of its objects to provide a device of thecharacter described that is "adapted to be attached to milling-machines-now in "use and that has means to simultaneously drive several cutters, said cutters 'beingremovable and replaceable in their spindles,which are in turn mounted in a revoluble turret that may be turned'so that the'planecontaining the spin dle-axes may approach or recede from the horizontal, and thereby accomplish the principal object of my inventionviz., the provision of a machine for cutting a predetermined to avoid except when the work-pieces areeX-a actlyalike. 7

Another feature of my invention is the providing of adust and dirt' proof casing for the driving mechanism, which may be readily opened to permit the gearing to be exposed.

My invention also permits thegear-wheels' to be readily removed for the purpose of changing the relative speed of the cutters.

Another object of my invention is to so construct the spindles carrying the cutters: and other parts subject to friction'as to pro vide for their wear and at the same time keep the various parts in the desired alinement.

Additional advantages of my invention will appear hereinafter and by reference to the accompanying drawings, in Which- Fig.1 is a View of a portion of a millingmachine, showing my invention in place Serial No. 109,373. (No modelfi thereon; Fig. 2, a front view of the device;

Fig. 3, a side View; Fig. 4', a vertical section taken through the cutter-spindles, and Fig. 5 a detail of the driving-arbor.

Referring to the drawings,in which similar reference-characters indicate'corresponding parts throughout the severalviews, a represents a milling-machine of any-desired construction having the ov'erhang ar'm B and the driven'spindle C. f

lvly inv'eiit'ion'is adapted to be attached-to themilling-machineA bymeans of'a bracket 1, having; its upper-part f'orr'ne'd witha loop 2, which is secure'd' to the overhang-arm B by means of screw-bolts 3, The. lower part of the bracket is formed witha' semicircular recess, and a removable segment' iisiholted to said bracket-to receive the swivel housing or turret 5,"said turret being revoluble in said bracket and adjusted by means of a worm-gear 6, cut into its periphery, meshing with aworm-7,-;the shaft of which is jour+ naled in a bracket 8; swivellymounted on-the bracket 1 bymeans of se't sc'rew 9. The object of swivelly mounting the worm=shaftj is to permit a rapid revolutionof the turret-5 by throwing the worm'7out ofgear-With the worm-gear 6 and' the n by throwingt'he worm into engagement with the worm-gear secure 'a fine adjustment, 10'rep resentinga' gage on the fedge of "the turret, and 11 a point on the bracket 1, while 12 .118 a gage on the "wormshaft for minute adjustment, l3'bfeing' a point on the bracket 8. 1

The front of theturret'5-isformed with-a "depression 14 and three screw-threaded'bores 15 opening therein, the bores being to receive the spindles 16 for driving the cutters 16, the shanks thereof being driven into the taperbores 17 in said spindles,,18 being a straight bore communicating with the taper-bore to permit the insertion of an instrument behind the cutter-shank when it is desired to drive it out. The spindle 16 is formed with a shoulder 19, a tapering portion 19, and aireduced and screw-threaded end 20, ovenwhichian adjusting-nut 21is-placed, the nut 2'1 -bei n'g screw-threaded to fit the screW-threaded"bore l5 and having a straight bore tapering outwardly at its end to fit the rear of the spindle 16.

22 is a-check-nut on the adjusting-nut 21, and 23 a nut on the screw-threaded end of the spindle 20 to compensate the wear of the shoulder 19 and tapering bore in the adjusting-nut 2].

The central spindle is formed with a taperbore 24 at its rear and a key-slot 25 to receive the key 26 on the driving-arbor 27, which is inserted in the bore of the driven spindle C, 28 being a taper-plug adapted to seat in the taper-bore 24 to insure alinement of the cutter-spindle 16 and the driven spindle O.

29 is a screw-threaded cap to firmly secure the driving-shank 27 to the cutter-spindle 16 and fitting the screw-threaded end 20 thereof.

30 represents meshing gear-wheels inserted over the spindles 16 and turning said spindles by means of semicircular keys 31, sunk into said spindles and engaging splines 32 in the gear-wheels. The depression 14.- is covered by a plate 33, which is secured to the turret 5 by means of set-screws 34, said plate 33 being provided with three holes 35, which are screw-threaded to secure adjusting-rings 36, having taper-holes to fit the cone-shaped hubs of the gear-wheels 30. It will be understood from this construction that the plate 33 may be removed from the turret 5, exposing the gear-wheels 30, and the gear-wheels may be changed so as to provide for any desired relative speed of the spindles 16 by sliding said gear-wheels off the end of the spindles and out of engagement with the keys 31 and installing other gear-wheels having the proper size to secure the relative speed of the spindles that may be necessary to perform the work in hand.

The operation of my invention will readily appear by inspection of the accompanying drawings. The work-piece is fed to the cutters in a horizontal direction, the cutters operating on the side of the work-piece. In Fig. 1 will be seen a work-piece D in position, being held to a horizontally-slidable table E by means of a clamp F, secured by a bolt G.

It will be readily seen that among the advantages of my machine is the dispensing with a number of formed cutters in duplicate work, as various outlines can be cut by simply altering the adjustment of the turret. By having the spindles set on a horizontal line the cutters necessary to rough and finish the work may be mounted in the spindles and the work completed by putting the material through the machine but once. Another advantage is in the fact that the diminishing of the size of the cuttersin grinding may be compensated by adjusting the turret.

Having thus described my invention, what I claim is l. The combination with the overhang-arm of a milling-machine, of a bracket mounted thereon, a turret revolubly mounted in said bracket, cutter-spindles journaled in said turret, and means to cause a simultaneous rotation of the cutter-spindles, substantially as shown and described.

2. The combination with the overhang arm of a milling-machine, of a bracket mounted thereon, a turret revolubly mounted in said bracket, cutter -spindles journaled in said turret, means to cause a simultaneous rotation of the cutter-spindles, and means to longitudinally adjust said cutter-spindles, substantially as shown and described.

3. The combination with the overhang-arm of a milling-machine, of a bracket mounted thereon, a turret revolubly mounted in said bracket, cutter-spindles journaled in said turret, means to connect one of said cutterspindles with the driven spindle of the machine, meshing gear-wheels removably keyed to said cutter-spindles, and means to longitudinally adjust eachindividual cutting-spindle, substantially as shown and described.

4. The combination with the overhang-arm of a milling-machine, of a bracket mounted thereon, a turret revolubly mounted in said bracket, cutter-spindles journaled in said turret, one of said cutter-spindles connected to thedriven spindle of the machine by means of a clutch, meshing gear-wheels removably keyed to said cutter-spindles, and means to longitudinallyadjusteachindividualcuttingspindle,substantially as shown and described.

5. The combination with the overhang-arm of a milling-machine, of a turret suspended therefrom having screw-threaded bores, adjusting-nuts inserted in said screw-threaded bores, cutter-spindles journaled in said adjusting-nuts, and means to cause a simultaneous rotation of said spindles, substantially as shown and described.

6. The combination with the overhang-arm of a milling machine, of a turret suspended therefrom having a recess in its face, cutterspindles journaled in bores formed in said turret, gear-wheels mounted on said spindles by means of keys and splines and seating in said recess, and a face-plate to cover said recess and gearing, substantially as shown and described.

7. The combination with the overhang-arm of a milling-machine, of a turret suspended therefrom having a recess in its face and screw-threaded bores, cutter-spindles having an enlarged and tapering shoulder and a reduced and screw-threaded rear end, adjusting-nuts formed with a bore to fit said tapering shoulders and reduced rear ends and screwed into said screw-threaded bores,checknuts mounted on said adjusting-nuts, nuts mounted on the screw-threaded ends of the spindles, gear-wheels having coneshaped hubs mounted on said spindles by means of keys and splines and seating in the recess in said plate, a face-plate having screw-threaded bores to receive said spindles, and rings having tapering bores to fit said cone-shaped hubs, substantially as shown and described.

In testimony whereof I hereto afiix my signature in the presence of two witnesses.

SAMUEL R. BOYER.

Witnesses:

JOHN A. MACPEAK, JOHN D. ERTEL. 

